CSS-in-JS still offers all the important features of CSS preprocessors. Thankfully, Node.js is here and I decided to use it. If this lesson has helped you, might enjoy Learn JavaScript, where you’ll learn how to build anything you want from scratch. CSS variables have access to the DOM, which means that you can change them with JavaScript. To set the value of a CSS variable using JavaScript, you use setProperty on documentElement's style property: document.documentElement.style .setProperty('--my-variable-name', 'pink'); You'll immediately see the new value applied everywhere the variable is used. Build a simple website using HTML, CSS, and JavaScript. CSS-in-JS is a fairly broad topic. Changing Inline CSS Styles With JavaScript It is a common task to want to manipulate the CSS styles of a page using JavaScript. The CSS Object Model is a set of APIs allowing the manipulation of CSS from JavaScript. CSS Variables and JavaScript. All libraries support auto-prefixing, and JavaScript offers most other features like mixins (functions) and variables natively. We recently came across Lea Verou’s slider polyfill which expresses an interesting use of CSS Variables to communicate between JavaScript and CSS. Steps I Want to Accomplish Usually, when you want to add multiple CSS properties to an element, you have to set them individually as shown below: Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. If there are two or more conflicting CSS rules that point to the same element, the browser follows some rules to determine which one is most specific and therefore wins out. A very basic understanding of HTML, CSS & JavaScript. easy-to-follow tutorials, and other stuff I think you'd enjoy! Logic responsible for the final CSS rule has access to the state and can be located toge… JavaScript can be used to control CSS animations and make them even better, with little code. The idea of CSS transitions is simple. developers read my tutorials to find a solution to their problems. We describe a property and how its changes should be animated. Here is how you can use this method to add styles to the above HTML element: It is not really required to create a new